Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d123eb4e3a8b0f4…

MALICIOUS

PDF

40.2 KB Authoring application: Adobe PDF Library 9.0 First seen: 2021-06-20
MD5: d076ee0ae01771822a6112f40a1709ec SHA-1: af1a76d767a8865aa8727861c9fec82fab1eb2a7 SHA-256: 0d123eb4e3a8b0f4d305a7f4e5ca694bbdccd4371496fe28dd996254f5fa0601
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various PDF files hosted on Weebly. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the structure suggests the document is designed to redirect users to malicious content hosted externally.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 3

  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://teserawixuxukor.weebly.com/uploads/1/3/0/4/130483338/36181f33e.pdf In PDF document text
    • https://kiwoxugaxis.weebly.com/uploads/1/3/0/2/130272979/01847982.pdfIn PDF document text
    • https://xefiwiwuv.weebly.com/uploads/1/3/0/4/130476778/buxut-tezisotekevega.pdfIn PDF document text
    • https://refifetukinobev.weebly.com/uploads/1/3/0/3/130379902/1441332.pdfIn PDF document text
    • https://woragofewe.weebly.com/uploads/1/3/0/4/130478347/bilekujugidozu_wexuxetemip_fimezevukumo.pdfIn PDF document text
    • https://risakedix.weebly.com/uploads/1/3/0/2/130271083/jesokefizosav_gixilawasos_baxilipolona.pdfIn PDF document text
    • https://jibusipefakarul.weebly.com/uploads/1/3/0/3/130313037/zusorip-mokezibebetu-mefekufuzupimu.pdfIn PDF document text
    • https://sekiwoludoleza.weebly.com/uploads/1/3/0/2/130289277/130289277.html#guitar+strumming+patterns+countryIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000011a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A3 8048 bytes
SHA-256: 29323c57dd30dfbd455c5d6b5024e119687ace479a0195726258de4631219bb0
font_01_sfnt_off000055e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55E7 16268 bytes
SHA-256: 5d7ebd720715cd86529581f1d40cc643f68465477bd430d4be5ff736bc95f798